Texas Instruments BQ219XLB-007, BQ219XLBMODULE, BQ219XLB-KT, BQ219XLB-015, BQ219XLB-014 Datasheet
...
Features
➤
Complete smart battery solution for NiCd, NiMH,
and Li-Ion battery packs
➤
Based on the bq2092 or bq2040 Gas Gauge IC
➤
Ideal for DR35 or DR36 type packs
➤
Narrow board fits in the crevice formed by two
adjacent battery packs
➤
Accurate measurement of available battery
capacity
➤
Designed for battery pack integration:
–
Measures only 3.5 (L) x 0.3 (W) inches
–
Includes Gas Gauge IC, configuration
EEPROM, and sense resistor
– Four onboard state-of-charge LEDs with
push-button activation
– Low operating current for minimal battery
drain
➤ Critical battery information available over two-wire
serial port
General Description
The bq219XL Smart Battery Module provides a com
plete solution for the design of intelligent battery packs.
The bq219XL uses the SMBus protocol and supports the
Smart Battery Data commands in the SMB/SBD specifi
cations. Designed for battery pack integration, the
bq219XL combines the bq2092 or bq2040 Gas Gauge IC
with a serial EEPROM on a small printed circuit board.
The board includes all the necessary components to ac
curately monitor battery capacity and communicate
critical battery parameters to the host system or battery
charger. The bq219XL also includes four LEDs. The
push-button switch activates the LEDs to show remain
ing battery capacity in 25% increments.
Contacts are provided on the bq219XL for direct connec
tion to the battery stack (B+, B-) and the two-wire inter
face (C, D). Please refer to the bq2092 or bq2040 data
sheet for specific information on the operation of the Gas
Gauge and communication interface.
Unitrode configures the bq219XL based on the informa
tion requested in Table 1. The configuration defines the
pack voltage, capacity, and chemistry and charge control
parameters. The Smart Battery Module uses the
onboard sense resistor to track charge and discharge activity of the battery pack. Figure 1 shows how the module connects to the cells.
A module development kit is also available for the
bq219XL. The bq219XLB-KT includes one configured
module and the following:
1) An EV2200-92 or EV2200-40 interface board that
allows connection to the serial port of any ATcompatible computer.
2) Menu-driven software to display charge/discharge
activity and to allow user interface to the Gas
Gauge IC and serial E
2
PROM from any standard
Windows 95 or 3.1x PC.
Pin Descriptions
B+
BAT+/Battery positive/Pack positive
P-
PACK-/Pack negative
C
SMBC/Communications clock
D
SMBD/Serial data
B-
BAT-/Battery negative
STAT
STAT/No connect
1
Smart Battery Module with LEDs
Preliminary
bq219XL
6/98
2
bq219XL
Preliminary
FG219XL1.eps
Battery Pack
B-
P-
B+bq219XL
Load
Charger
Cells
PACK+PACK-
Figure 1. Module Connection Diagram
5-3
Preliminary
bq219XL
Customer Name: ______________________________________________________________________________________________
Contact: _______________________________________________________ Phone:____________________________
Address:________________________________________________________________________________________________
Sales Contact: __________________________________________________ Phone: ____________________________
Board Configuration
IC type ________________ bq2040 or bq2092
LEDs and switch ________________ Yes or No
Display mode ________________ Relative or Absolute
Discharge rate (3.0A max.) Min ____________ Avg ____________ Max ___________
Duration at max. discharge ________________
Number of series cells ________________
EEPROM Configuration Typical Values
NiMH Li-Ion
Remaining time alarm (min) _______________ Sets the low time alarm level 10 min 10 min
Remaining capacity alarm
(mAh)
_______________ Sets the low capacity alarm level C/10 C/10
Charging voltage (mV) _______________ Sets the requested charging voltage 65535 4.1V/cell
Design cpaacity (mAh) _______________ Defines the battery pack capacity 3000 3600
Design voltage (mV) _______________ Defines the battery pack voltage 12000 10800
Manufacturer date _______________ Battery pack manufacturer date mm/dd/yy mm/dd/yy
Serial number _______________ Battery pack serial number 0-65535 0-65535
Fast-charging current (mA) _______________ Sets the requested charging current 1C 1C
Maintenance charging
current (mA) _______________
Sets the requested maintenance charging
current C/20 0
Li-Ion taper current (mA) _______________ Sets the upper limit for charge termination NA C/10
Maximum overcharge (mAh) _______________ Sets the maximum amount of overcharge 256mAh 128mAh
Maximum temperature (°C)
_______________ Sets the maximum charge temperature
61°C61°C
∆T/∆t (°C/min)
_______________ Sets the termination rate 3°C/3min 4.6°C/20s
Fast-charge efficiency (%) _______________ Sets the fast-charge efficiency factor 95% 100%
Maintenance charge effi
-
ciency (%)
_______________ Sets the maintence charge efficiency factor 80% 100%
Self-discharge rate (%/day) _______________ Sets the batterys self-discharge rate 1.5%/day 0.2%/day
EDV1 (mV) _______________ Sets the initial end-of-discharge warning 1.05V/cell 3.0V/cell
EDVF (mV) _______________ Sets the final end-of-discharge warning 1.0V/cell 2.8V/cell
Hold-off timer for ∆T/∆t (sec.)
_______________
Sets the hold off period for ∆T/∆t
termination
180s 320s
Manufacturer name _______________ Programs manufacturer’s name (11 char. max) bq bq
Device name _______________ Programs device name (7 char. max) bq36 bq202
Chemistry _______________ Programs pack’s chemistry (5 char. max) NiMH LION
Manufacturer data _______________ Open field (5 char. max) 2040 2040
FAE Approval: ________________ Date: ___________________
Table 1. bq219XL Module Configuration
Loading...